I've heard a huge deal of Green Day stuff from a lot of their albums including Dookie and Nimrod. And yeah, they've been around a lot longer than Simple Plan, and have sold more also because they were one of the first big MTV Pop-punk/Power-pop banRAB along with Blink-182. Those types of banRAB are not uncommon at all anymore. Today we have Sum41, +44, Good Charlotte, Hedley, Simple Plan, Paramore, All Time Low, Bowling For Soup, New Found Glory, etc. Although to call most of those band anything to do with punk is stretching it.
Yes, but that's not the point.